Recumbent bicycle frame



FIG. 1 is a perspective view of a recumbent bicycle frame with the front wheel to the right, showing our new design;

FIG. 2 is a side elevational view of a recumbent bicycle frame with the rear wheels on the left and the front wheels on the right, showing our new design;

FIG. 3 is a side elevational view of a recumbent bicycle frame with the rear wheels on the right and the front wheels on the left, showing our new design;

FIG. 4 is a front elevational perspective view thereof, showing our new design;

FIG. 5 is a rear elevational perspective view thereof, showing our new design;

FIG. 6 is a top perspective view of a recumbent bicycle frame thereof, showing our new design; and,

FIG. 7 is a bottom perspective view of a recumbent bicycle frame thereof, showing our new design.

The broken lines shown form no part of the claimed design. 

The ornamental design for a recumbent bicycle frame, as shown and described. 